<template>
  <div class="app-container">
    <!--顶部header区域-->
    <mt-header fixed title="dragon黑马程序员">
       <span to="/" slot="left" @click="getback()" v-show="flag">
           <mt-button icon="back">返回</mt-button>
       </span>
    </mt-header>
  
    <!--中间的路由router-view区域-->
    <transition>
      <router-view></router-view>
    </transition>
   <!--底部区域-->
    
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item-dragon" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item-dragon" to="/member">
        <span class="mui-icon mui-icon-contact"> </span>
        <span class="mui-tab-label">会员</span>
      </router-link>
      <router-link class="mui-tab-item-dragon" to="/shopcar">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
          <span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span>
        </span>
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item-dragon" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
    </nav>
  </div>
</template>

<script>
export default{
  data(){
    return{
      flag:false
    };
  },
  created(){
    this.flag = this.$route.path === '/home' ? false : true 
  },
  methods:{
    getback(){
      this.$router.go(-1);
    }
  },
  watch:{
    '$route.path':function(newVal){
      if(newVal === '/home'){
        this.flag = false
      }else{
        this.flag = true
      }
    }
  }

}

</script>


<style lang="scss" scoped>

.mint-header{
  z-index:90;
}

.app-container{
  padding-top:40px;
  padding-bottom:50px;
  overflow-x: hidden;
}
.v-enter{
  opacity:0;
  transform:translateX(100%);
}

.v-leave-to{
  opacity:0;
  transform:translateX(-100%);
  position: absolute;
}

.v-enter-active,
.v-leave-active{
  transition:all 0.5s ease;
}

//改类名，解决tabbar点击无法切换的问题
.mui-bar-tab .mui-tab-item-dragon.mui-active {
    color: #007aff;
}
.mui-bar-tab .mui-tab-item-dragon {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item-dragon .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-dragon .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>
